{"product_id":"airsoft-helden-hr556-10in-s-hpa-mechanical-hpa-rifle-black","title":"Airsoft Helden HR556 10in S-HPA — Mechanical HPA Rifle, Black","description":"\u003cdiv style=\"background:#edfaf1;border-left:4px solid #27ae60;padding:12px 16px;border-radius:0 6px 6px 0;margin:0 0 16px;font-size:13px;\"\u003e\n\u003cstrong style=\"color:#1a6b3a;\"\u003eAirsoft Helden HR556 10in S-HPA — an HPA rifle with no battery and no electronics in it at all.\u003c\/strong\u003e Connect the line and play. There is nothing to charge, nothing to program and nothing to go flat halfway through a game.\n\u003c\/div\u003e\n\u003cp\u003eEvery HPA rifle we sell has the same small dependency: a battery. It is a tiny one, and it lasts a long time, but it still has to be charged, it still lives in a cramped space inside the gun, and when it dies the rifle stops. Anyone who has spent a lunch break hunting for a 7.4V micro pack knows the feeling.\u003c\/p\u003e\n\u003cp\u003eThe HR556 removes that entirely. It is a \u003cstrong\u003emechanically operated\u003c\/strong\u003e HPA platform — no fire control unit, no trigger board, no battery, no app. The trigger actuates the engine directly. You connect your air line and shoot, and the only thing that can run out is the tank.\u003c\/p\u003e\n\u003cp\u003eAt the centre is the \u003cstrong\u003eMechLabs XX-Mod mechanical HPA engine\u003c\/strong\u003e, and the surprise is how much of it is still adjustable. Travel distance, air consumption and rate of fire all tune by hand, so you can set the rifle up for a CQB site or an efficient all-day woodland loadout without an app or a laptop. That is a genuinely different proposition from every electronic HPA gun on the market: mechanical does not have to mean fixed.\u003c\/p\u003e\n\u003cp\u003eAirsoft Helden are a European events organiser rather than a traditional manufacturer, and the HR556 was developed through their own events and player testing over the prototype phase before launching at IWA 2026. That shows in the priorities — serviceability, simplicity and field reliability rather than feature count.\u003c\/p\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eWhat’s on the outside\u003c\/h2\u003e\n\u003cp\u003eA T6 aluminium and reinforced polymer receiver set, aligned specifically around the mechanical engine rather than adapted from an AEG. The aluminium lower handguard carries \u003cstrong\u003efour M-LOK slots at the 3 and 9 o’clock positions\u003c\/strong\u003e and a \u003cstrong\u003efive-slot accessory rail at 6 o’clock\u003c\/strong\u003e, with a 20mm flat-top for optics. Slim and light by design, and built so the engine is straightforward to get at when it needs servicing.\u003c\/p\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;margin:0 0 18px;\"\u003e\n  \u003ctr style=\"background:#1B3A6B;color:#fff;\"\u003e\n    \u003cth style=\"padding:7px 12px;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n    \u003cth style=\"padding:7px 12px;text-align:left;\"\u003eDetail\u003c\/th\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eType\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMechanical HPA airsoft rifle\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e10 inch\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eEngine\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMechLabs XX-Mod mechanical HPA\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eElectronics\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e\n\u003cstrong\u003eNone\u003c\/strong\u003e — no ETU, no battery required\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eFire modes\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eSemi and full auto\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eAdjustable\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eTravel distance, air consumption, RPS\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eHop-up\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eAdjustable\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eReceiver\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eT6 aluminium and reinforced polymer\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eHandguard\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eAluminium lower, M-LOK\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eM-LOK\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e4 slots at 3 and 9 o’clock\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eAccessory rail\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e5-slot at 6 o’clock\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eOptic mount\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e20mm flat-top\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eAir connector\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eUS-QD\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMagazine\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e190 round mid-cap supplied\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMaterials\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eAluminium, polymer, steel\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eColour\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eBlack\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eOrigin\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMade in Taiwan\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eSupplier SKU\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eASH-111548\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eBrand\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eAirsoft Helden\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eGood to know before you buy\u003c\/h2\u003e\n\u003cp\u003eThis is the rifle only. You will still need an \u003ca href=\"\/collections\/hpa-tanks\" style=\"color:#1B3A6B;\"\u003eHPA tank\u003c\/a\u003e, a \u003ca href=\"\/collections\/hpa-regulators\" style=\"color:#1B3A6B;\"\u003eregulator\u003c\/a\u003e and an \u003ca href=\"\/collections\/hpa-lines\" style=\"color:#1B3A6B;\"\u003eHPA line\u003c\/a\u003e to run it — but no battery and no charger, which is one fewer thing in the bag.\u003c\/p\u003e\n\u003cp\u003eThe air connector is \u003cstrong\u003eUS-QD\u003c\/strong\u003e, so check your existing line matches before ordering. Most airsoft HPA setups use it, but confirm if you are running something unusual.\u003c\/p\u003e\n\u003cp\u003eBeing mechanical, it does not offer the programmable fire modes, binary trigger or Bluetooth tuning of an electronic platform like the MTW or a GATE-equipped build. That is the trade, and for a lot of players it is the right one.\u003c\/p\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it really need no battery?\u003c\/strong\u003e\u003cbr\u003eCorrect. The trigger actuates the mechanical engine directly, so there is no fire control unit, no trigger board and nothing to charge. Air is the only thing it consumes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIf it is mechanical, can I still tune it?\u003c\/strong\u003e\u003cbr\u003eYes, and this is the interesting part. Travel distance, air consumption and rate of fire are all adjustable by hand. You are trading app-based programming for physical adjustment, not for a fixed setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does it compare to an MTW or a GATE build?\u003c\/strong\u003e\u003cbr\u003eThose give you programmable fire modes, trigger sensitivity and Bluetooth tuning — and need a battery and an FCU to do it. The HR556 gives you mechanical simplicity and nothing to fail electronically. Different philosophies; both valid.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is MechLabs?\u003c\/strong\u003e\u003cbr\u003eThe manufacturer of the XX-Mod mechanical HPA engine at the heart of the rifle. Airsoft Helden partnered with them specifically for this platform.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat do I need to run it?\u003c\/strong\u003e\u003cbr\u003eAn HPA tank, a regulator and a line with a US-QD fitting. No battery and no charger. Tell us your budget and we will spec a complete air setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with a magazine?\u003c\/strong\u003e\u003cbr\u003eYes, a 190 round mid-cap is supplied.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan you service it?\u003c\/strong\u003e\u003cbr\u003eYes. It was designed for easy maintenance access, and we handle HPA servicing in the workshop through our tech service.\u003c\/p\u003e\n\u003cdiv style=\"background:#fffbe6;border-left:4px solid #f0d060;padding:12px 16px;border-radius:0 6px 6px 0;margin:0 0 16px;font-size:13px;\"\u003e\n⚠ \u003cstrong\u003eUKARA required:\u003c\/strong\u003e As a realistic imitation firearm, this product requires UKARA registration or a valid defence. We verify at checkout. Register by playing 3 games over 56+ days at \u003ca href=\"\/pages\/airsoft-shop-high-wycombe-buckinghamshire\" style=\"color:#1B3A6B;\"\u003eSkirmish Wycombe Airsoft\u003c\/a\u003e.\n\u003c\/div\u003e\n\u003cdiv style=\"background:#1B3A6B;color:#fff;padding:12px 16px;border-radius:6px;margin:18px 0 0;font-size:13px;\"\u003e\n\u003cstrong style=\"color:#fff;\"\u003e💡 Titan Forge Airsoft tip:\u003c\/strong\u003e you will need a tank, regulator and line to run it — see our \u003ca href=\"\/collections\/hpa-tanks\" style=\"color:#cdd6f4;\"\u003eHPA tanks\u003c\/a\u003e and \u003ca href=\"\/collections\/hpa-lines\" style=\"color:#cdd6f4;\"\u003elines\u003c\/a\u003e, or browse the full \u003ca href=\"\/collections\/hpa-rifles\" style=\"color:#cdd6f4;\"\u003eHPA rifle range\u003c\/a\u003e. New to HPA? \u003ca href=\"https:\/\/wa.me\/447874452357\" style=\"color:#cdd6f4;\"\u003emessage us on WhatsApp\u003c\/a\u003e and we will spec the lot with you.\n\u003c\/div\u003e","brand":"Airsoft Helden","offers":[{"title":"Default Title","offer_id":55637515633016,"sku":"8502185155","price":599.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/8097\/3450\/files\/AirsoftHeldenHR55610inMechanicalHPA_TitanForgeAirsoft-2.webp?v=1787383840","url":"https:\/\/www.titanforgeairsoft.com\/products\/airsoft-helden-hr556-10in-s-hpa-mechanical-hpa-rifle-black","provider":"Titan Forge Airsoft","version":"1.0","type":"link"}